The slowness of one section of the world about adopting the valuable ideas of another section of it is a curious thing and unaccountable.

Man is the only animal that deals in that atorcity of atrocities, War. He is the only one that gathers his brethren about him and goes forth in cold blood and calm pulse to exterminate his kind.

I think we never become really and genuinely our entire and honest selves until we are dead--and not then until we have been dead years and years. People ought to start dead, and they would be honest so much earlier.

There ain't nothing more to write about and I'm rotten glad of it, because if I'd know'd what trouble it was to make a book, I wouldn't a tackled it.

You have noticed that the human being is a curiosity. In times past he has had (and worn out and flung away) hundreds and hundreds of religions; today he has hundreds and hundreds of religions, and launches not fewer than three new ones every year. I could enlarge on that number and still be within the facts.

The art of prophecy is very difficult, especially with respect to the future.

The radical of one century is the conservative of the next.